US2548734A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insertable vent pipe
Assignee: Scully Signal Co
•
Filing: 1947-11-05
•
Granted: 1951-04-10
•
Expires: 1967-11-05
Abstract
No abstract record available.
Inventors
- 👤 Mathey Alcide Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:24
CPC Classifications
B; B60; B60K; B60K15/00; B60K15/03; B60K15/04; B60K15/0403
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USRE21930E
Cited
USRE22833E
Cited
US1876627A
Cited
US1079836A
Cited
US1116934A
Cited
US1242473A
Cited
US1217732A
Cited
US1995007A
Cited
US2138104A
Cited
US2140559A
Cited
GB505384A
Cited
US2320162A
Cited
US2305992A
Cited
US2281448A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-09 | 1954-10-09 | 1955-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-09 | 1958-10-09 | 1959-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-09 | 1962-10-09 | 1963-04-10 | $7700.00 | Window Closed / Lapsed |